Preheating and distributing device for rotary oil burners



June 23, 1925'.

J. SCHEMINGER, JR

PREHEATING AND DISTRIBUTING DEVICE FOR ROTARY OIL BURNERS Filed Aug. 20, 1925 Patented June 23, 1925.

UNITED STATES PATENT OFFICE.

JOHN SGHEIINGEB, JR, PROVIDENCE BHODE mm, ASSIGHOB TO AE'IRA AUTOIATIC OIL BURNER, INCORPORATED, 02 m YORK, I Y., A CORPORATION OF NEW YORK.

PR'EHEATI'HG DISTRIBUTING DEVICE I03 ROTARY 01L 3 Application fled August so, 192:. Serial Io. 05am.

Taall whom it may conoem:

Be it known that I, J 0111: J r. a citizen of the United States, residlng at rovidence, in the county of Providence 5 and State of Rhode Island, have invented certain new and useful Improvements 1n Preheating and Distributing Devices for Rotary Oil Burners; and I do hereby declare the following to be a full, clear, and

exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to rotary oil burners, and more particularly to a nozzle of peculiar construction 11 n which the fuel is delivered from a fee pipe for distribution over the surface of the nozzle and delivery upon a subjacent spray-plate adapted to effect atomization of the oil or other liquid fuel and the admixture of the resultant vapor with air for supporting combustion.

The objects of the invention are to provide simple and efiicient means for initially heating or'raising the temperature of oil or other liquid fuel and distributing it upon a spray-plate or atomizing device mounted upon a vertical hollow shaft and rotatable with said distributing means; said means comprising a metal body of nozzle-like form having an upwardly extended pointed end and gradually enlarged toward'the lower end thereof and having within its lower enlarged portion a gas receiving and distributing chamber from which gas exit ports lead downwardly and outwardly for maintaining a pilot light; a gas feed pipe being provided for delivering gas into said distributing chamber, and a fuel feed PIPE having its delive end arranged over the pointed end of sa1d nozzle so that the liquid fuel is spread over the surface of the nozzle and evently distributed over the surface of the spray-plate and effectually atomized by the combmed act-ion of the nozzle and spray-plate.

The invention will first be hereinafter more particularly described, with reference to the accompanying drawings, which are to be taken as a part of this specification,

and then pointed out in the claims at the end of the description.

- In said drawings, Fig. 1 is a vertical sectional elevation of a fragmentary portion of a. rotary oil burner with a distributing nozzle embodying my invention; and

Fig. 2 is a sectional view taken on the line 2-2, of Fig. 1, looking in the direction of the arrows; the parts being shown in inverted position.

Referring to said drawings, in which the same reference characters areusedtodenote corresponding parts different views the letter A denotes a fuel feed pipe leading from any suitable source of supply, and B a distributing nozzle; the delivery end a, of said pipe being arranged to deliver liquid fuel upon the pointed end of the distributor, which is mounted upon the upper end of a vertical hollow shaft C within which is sta'tionarily secured a gas feed pipe D. The distributor B consists of a body of metal having an upwardly extended pointed end and gradually enlarged toward the lower end thereof and formed or provided with a gas receiving and distributing chamber b within its enlarged lower portion; a solid mass of metal being left between said chamher and said pointed end to adapt the device to absorb and retain heat eno h to pre-heat or raise the temperature of t e oil or other liquid fuel delivered by the feed pipe A upon the pointed end of the distri-' butor sufficiently to aid in effecting vaporization. As the oil flows downwardly over the rounded and gradually enlarged surfaua of the distributor it is spread out in a. thin film and distributed over the surface of a subjacent spray-plate E, fixed on the shaft C and adapted in co-operation with the distributing device to effect complete vaporization of the oil and admixture of the vaporwith air for consumption by the burner. The upper end of the gas fuel feed pipe D enters the distributing chamber 12 at the base thereof and has a plug d screwed therein in which there is a minute opening or channel (1 for discharging a jet of gas into said chamber. The lower flaring portion of the distributor, below the distributing chamher 6, has formed therein a. plurality or series of gas exit ports b which are preferably inclined outwardly and downwardly with their lower ends arranged to discharge the gas into an annular open 5 ace formed between the central portion or ub of the distributor and a depending mar-1 ginal flange b at the lower endor base of the distributor, so that the gas entering said distributing chamber and exuding therefrom through said ports 5 may not 'be ignited until it reaches said annular'space in which a flame is maintained, spreading outwardly over said flange, and the formation and deposit of soot inside the distributing chamber and the discharge ports is prevented, thus keeping said chamber and ports free and uninterrupted, for the passage of gas therethrough.

The spray-plate E may be of any suitable construction, for example, such as ShOWl'lI in my Patent No. 1,327,256 dated January 6, 1920. As shown, it has a hub-like portion 6 which is slidably fitted upon the shaft C, preferably by means of aspline and groove connection, to adapt the spray-plateto be readily removed by sliding it upwardly off of the hollow standard. The standard has a shoulder 0 thereon at the base of the spray-plate upon which the surrounding portion of the latter rests so as to l1m1t its downward movement. The hub-like portion of the distributor B may be similarly secured upon the upper end of the shaft C, so as to cause the two parts to rotate together, or a set screw F (Fig. 2) may be inserted through a hole in the lower portion of the distributor for securing the distributor in a fixed position on the hollow shaft with its hub resting on the hub of the spray plate.

In operation, assuming that a gas fed pilot light is burning at the lower end of the distributor, heat will be generated and stored in the mass of metal above the gas receiving chamber suflicient to preheat or raise the temperature of the oil or other liquid fuel delivered by the feed pipe A directly over the pointed end of the distributor and spread over the downwardly and outwardly enlarged and rounded surface of the distributor to place the oil in good condition for atomization, and the oil flowing over the surface of the distributor will be distributed evenly oruniformly upon the sprayplate and thus complete atomization and admixture of the vapor with air is effected by the rotation of the spray-plate, and a circle of flame is maintained outside of the gas receiving and distributing chamber and the exit ports leading therefrom, such flame surrounding the depending marginal ortion or flange b on the lower end of the distributor to revcnt the formation and deposit of soot as efore stated.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States is 1. Aliquid fuel distributor or spreader and pre-heating device for rotary oil burners, or the like, comprising a nozzle-like body having an upwardly extended pointed end and -gradually enlarged toward the lower end thereof and provided with a gas receiving and distributing chamber within its enlarged lower portion, and gas exit ports leading from said chamber through said enlarged end; said body being mounted on a tubular revoluble support carrying a sprayplate underneath said device, and a gas feed pipe extending through said support to said chamber.

2. A liquid fuel distributor or spreader and pre-heating device for rotar oil burners, or the like, comprising a nozzfie-like body having an upwardly extending ointed end and gradually enlarged towar the other end thereof and provided with a gas receiving and distributing chamber within its enlarged lower portion, there being a solid mass of heat-retaining metal between said chamber and said pointed end, and gas exit ports leading out of said chamber downwardly through said enlarged end; said body eing mounted on a tubular revoluble support carrying a spray-plate underneath said device, and a gas inlet pipe extending through said support to said chamber.

3. In a rotary oil burner, the combination with a vertical hollow shaft, of a spray plate fixed on said shaft near its upper end and a liquid fuel. distributor or spreader and pre-heating device of nozzle-like form mounted on said shaft above said spray plate and having an upwardly pointed end and a chambered lower portion with exit ports therein leading downwardly toward said spray plate; the delivery end of a fuel feed pipe being arranged over the pointed end of said distributing and pro-heating device, and a gas feed pipe extending through said shaft into the chamber within said device.

4. In a rotary oil burner, a vertical hollow shaft carrying a spray-plate, a fuel distributor or spreader and pre-heating device mounted on said shaft over said spray-plate; said device consisting of a metal body having a thick upper portion tapering to a pointed end and an enlarged lower portion terminating in a depending marginal extension or flange, and also having a gas receiving chamber therein and gas exit ports leading downwardly from said chamber, for maintaining a pilot light; said ex tension or flange projecting beyond the delivery end of said gas exit ports, a gas feed pipe extending through said shaft into said gas receiving chamber, and a fuel feed pipe having its deliver end arranged over the pointed end of sai body, whereby fuel delivered by said feed pipe on the pointed end of said bod is spread over the surface thereof by grav1ty and distributed over the surface of said spray-plate by centrifugal force.

5. In a rotary oil burner, a vertical shaft carrying a spray-plate or atomizing device and means for pre-heating and distributing oil over the surface of said spray-plate; said means comprisin a metal body having an upwardly pointed end over which oil may be spread, and gradually enlarging from said end to the lower part thereof, said lower part having a gas receiving chamber therein underlying a solid mass of metal and overlying a centrally disposed annular portion adapted to fit on the upper end of said shaft, and gas exit ports leading from said chamher through said annular portion; said shaft having a gas feed pipe therein leading into said chamber.

6. The combination in a rotary oil burner with a vertical rotary shaft. of a spray-plate fixed on said shaft near its upper end, a

pre-heating and distributing device of nozzle-like form mounted on said shaft above said spray-plate and means for supplying 20 oil to the surface of said distributing device; said device having an upwardly pointed end and a chambered lower portion having exit ports therein leading downwardly toward said spray-plate, and a gas feed pipe extend- 25 JOHN SCHEMIN GER, JR. Witnesses:

B. M. OFFU'I'I', THOMAS F. BURKE. 

